Dove Gray Crackle Subway Tile 3x6 (by MSI) full height up to 18" throughout and up to ceiling around windows. Feature tile 4" high on the two side walls, and through the center window (feature to carry around the entire perimeter) to be Everest Interlocking Pattern (by MSI). Pencil liners to be Highland Park Dove Gray, same color as tile included on all open ends and to frame windows.